Home / 81,279.23-112,166.95-49,013.69

Finding the Fourth Proportional to 81,279.23, 112,166.95 and 49,013.69

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Solution

The fourth proportional to 81,279.23, 112,166.95 and 49,013.69 is: 67,639.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.23 : 112,166.95 = 49,013.69 : x
  2. Step 2: Convert to fraction form
    81,279.23/112,166.95 = 49,013.69/x
  3. Step 3: Cross multiply
    81,279.23x = 112,166.95 × 49,013.69
  4. Step 4: Simplify right side
    81,279.23x = 5,497,716,292.87
  5. Step 5: Solve for x
    x = 5,497,716,292.87/81,279.23
  6. Step 6: Final answer
    x = 67,639.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.